The Pentagon says two senior Islamic State group commanders were killed in a U.S. airstrike in the northern Iraqi city of Mosul on June 25.

In a statement late Thursday, the Pentagon says the strike killed IS's deputy war minister, Basim Muhammad Ahmad Sultan al-Bajari, and a military commander named Hatim Talib al-Hamduni.

The announcement comes less than a week after Iraqi ground forces backed by coalition airstrikes retook the city of Fallujah from IS.

The fall of Fallujah means that Mosul, Iraq's second largest city, is IS's only remaining urban stronghold in Iraq.

IS has suffered a string of territorial losses in Iraq but the group continues to carry out large-scale militant attacks in the capital, Baghdad, and other territory far from the front-lines.